There are no safety recalls for the 2021 Hyundai Sonata Hybrid, but owners have filed 55 complaints with NHTSA.
2021 Hyundai Sonata Hybrid problems reported by owners
| Problem area | Reports | |
|---|
| Electrical System | 26 | |
| Engine | 21 | |
| Unknown or Other | 7 | |
| Forward Collision Avoidance | 5 | |
| Fuel/Propulsion System | 5 | |
| Power Train | 4 | |
| Engine and Engine Cooling | 3 | |
| Tires | 1 | |
| Visibility/Wiper | 1 | |
| Structure | 1 | |
Most reported parts
- Forward Collision Avoidance › Automatic Emergency Braking — 3
- Forward Collision Avoidance › Warnings — 1
- Forward Collision Avoidance › Adaptive Cruise Control — 1
- Engine and Engine Cooling › Engine › Oil/Lubrication › Sump/Tank › Drain Plug — 1
- Engine and Engine Cooling › Exhaust System › Emission Control › Gas Recirculation Valve (Egr Valve) — 1
- Electrical System › 12v/24v/48v Battery — 1
- Structure › Body — 1
Typical mileage at the time of the problem: 32,547 miles (median of owner reports).
Problems that are not covered by a recall are paid repairs; labor rates follow local mechanic pay — see what auto mechanics earn in each state.
Recent 2021 Hyundai Sonata Hybrid complaints
Owner reports filed with NHTSA, as written (personal details removed). Complaints are not verified by NHTSA.
Power Train · reported Sep 18, 2026
âMy Lincoln Nautilus (~9,180 miles) logged 6 "Powertrain Malfunction / Reduced Power" alerts in the [XXX] telematics system between XXX (XXX at 7:59 PM and 8:16 PM; XXX at 1:07 PM and 1:39 PM; XXX at 11:16 PM; and XXX at 10:56 AM). Out of the 6 logged events, I experienced severe loss of motive power during two of them. On XXX, while driving 70 mph on I-95, the vehicle completely lost all propulsion. Coasting without power, I was unable to pull fully onto the shoulder, leaving the car partially stuck in active traffic and narrowly escaping a high-speed collision. Once stopped, the vehicle…
Fuel/Propulsion System · reported Sep 18, 2026
The vehicle was brought to an authorized Hyundai dealer to have Service Campaign TBH and 94B completed. These campaigns were explicitly designed to prevent known mechanical defects (cracked EHRS assemblies and high-voltage battery errors). The software patches failed to protect the vehicle. The physical hardware has now catastrophically failed exactly as predicted by the campaign, resulting in extreme engine overheating and a physically swollen high-voltage battery pack. Hyundai is refusing to cover the cascading physical damage caused by their own failed campaign remedy, leaving me with an…
Electrical System · reported Aug 5, 2026
The vehicle experiences sudden, complete electrical power loss while driving at speed on highways and city streets or on the parking. All digital displays turn off, the engine shuts down, and power-assisted steering and braking are instantly lost without prior warning, presenting an extreme collision risk. The issue first occurred in August 2025 at approximately 48,000 miles and was taken to an authorized Hyundai dealer in Michigan for warranty repair. The dealer held the vehicle for over 30 days but failed to correct the defect. The identical power failure has continued and recently escalated…
Electrical System · reported Jun 22, 2026
I purchased this vehicle pre-owned approximately two years ago and have since developed concerns about its reliability, particularly related to the electrical and hybrid systems. In hindsight, I suspect these issues may be part of the reason the original owner traded it in to a CarMax dealer. Shortly after purchasing the vehicle, I began experiencing recurring problems with the 12V battery, including frequent instances requiring battery resets. Interestingly, these issues were significantly less frequent during colder weather. More recently, as temperatures have increased, the problem has…
Electrical System · reported May 22, 2026
The vehicleâs 12-volt electrical system repeatedly loses power within about 1 hour of sitting. The car becomes completely unresponsive (cannot unlock or start) and requires use of the built-in 12V battery reset button to restore power. This occurs frequently and makes the vehicle unreliable and potentially unsafe, as the car may become inoperable without warning. This appears to be an electrical system defect or parasitic power drain. The issue has been ongoing.
Frequently asked questions
Does the 2021 Hyundai Sonata Hybrid have any recalls?
No. NHTSA has no safety recalls for the 2021 Hyundai Sonata Hybrid as of this update. Check your VIN at nhtsa.gov/recalls for the latest status.
What is the most common problem with the 2021 Hyundai Sonata Hybrid?
Owners report electrical system problems most often (26 reports), followed by engine (21). The typical mileage when problems were reported is about 32,547 miles.
Are Hyundai recall repairs free?
Yes. Safety recall repairs are free at authorized Hyundai dealers, whether you are the first owner or bought the car used.